{"id":4289,"date":"2026-03-22T14:32:24","date_gmt":"2026-03-22T14:32:24","guid":{"rendered":"https:\/\/science.gsfc.nasa.gov\/stella\/?page_id=4289"},"modified":"2026-03-23T21:47:47","modified_gmt":"2026-03-23T21:47:47","slug":"stella-aa1-module","status":"publish","type":"page","link":"https:\/\/science.gsfc.nasa.gov\/stella\/instruments\/stella-1-2\/stella-aa1-module\/","title":{"rendered":"STELLA-AA1 module"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"4289\" class=\"elementor elementor-4289\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dcd9256 e-flex e-con-boxed e-con e-parent\" data-id=\"dcd9256\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a213aae elementor-widget__width-inherit elementor-widget elementor-widget-heading\" data-id=\"a213aae\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">STELLA-AA1<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c392c7b elementor-align-left elementor-widget elementor-widget-button\" data-id=\"c392c7b\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#build\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-wrench\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M507.73 109.1c-2.24-9.03-13.54-12.09-20.12-5.51l-74.36 74.36-67.88-11.31-11.31-67.88 74.36-74.36c6.62-6.62 3.43-17.9-5.66-20.16-47.38-11.74-99.55.91-136.58 37.93-39.64 39.64-50.55 97.1-34.05 147.2L18.74 402.76c-24.99 24.99-24.99 65.51 0 90.5 24.99 24.99 65.51 24.99 90.5 0l213.21-213.21c50.12 16.71 107.47 5.68 147.37-34.22 37.07-37.07 49.7-89.32 37.91-136.73zM64 472c-13.25 0-24-10.75-24-24 0-13.26 10.75-24 24-24s24 10.74 24 24c0 13.25-10.75 24-24 24z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Start Building <\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3689591 e-flex e-con-boxed e-con e-parent\" data-id=\"3689591\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5d3f5d0 e-con-full e-flex e-con e-child\" data-id=\"5d3f5d0\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c149f4f elementor-widget elementor-widget-text-editor\" data-id=\"c149f4f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"mb-2 whitespace-pre-wrap\"><strong>STELLA-1.2 Air Analyzer (AA1) module<\/strong><\/p><p>The STELLA-1.2 AA (Air Analyzer) is a portable, low-cost, self-assembled air quality monitoring module developed as part of the NASA STELLA instrument family. It simultaneously senses and records humidity, air temperature, barometric pressure, CO\u2082 concentration, methane, and airborne particulates using five sensors: the BME280, MCP9808, SCD-40, MQ-4, and PMSA003I. All sensor data are timestamped and recorded to a micro-SD card in a standard .CSV format for easy analysis.<\/p><p>The STELLA-1.2 AA is fully modular and swappable \u2014 the instrument operates even if individual sensors are not present, allowing builders to reduce cost by excluding sensors they don&#8217;t need. The Air Analyzer module can also be exchanged with other STELLA-1.2 sensor modules on the same base platform, making the overall instrument adaptable to a wide range of monitoring applications.<\/p><p class=\"mb-2 whitespace-pre-wrap\"><strong>Important for beta users<\/strong>: The official <strong><a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/instruments\/stella-1-2\/\">STELLA-1.2<\/a><\/strong> requires new housing and is <strong>not compatible with beta sensor modules<\/strong>. A <strong><a href=\"https:\/\/youtu.be\/PD5MnGaQ8Qw?si=Ye1PeLZZM_8eEYSa\" target=\"_blank\" rel=\"noopener\">conversion video<\/a><\/strong> guides beta testers through rewiring for the new platform.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ae80118 e-con-full e-flex e-con e-child\" data-id=\"ae80118\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cc3324b elementor-widget elementor-widget-heading\" data-id=\"cc3324b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">STELLA-1.2 Highlights<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cd8195 premium-blog-align-left elementor-widget elementor-widget-premium-addon-blog\" data-id=\"5cd8195\" data-element_type=\"widget\" data-settings=\"{&quot;scroll_to_offset&quot;:&quot;yes&quot;}\" data-widget_type=\"premium-addon-blog.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t\t\t<div class=\"premium-blog-wrap  premium-blog-list\" data-page=\"4289\" data-pagination=\"true\">\n\t\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"3\">\r\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-side\">\r\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\r\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-bright-effect\">\r\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"1398\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/02\/STELLA-1_2_snap2-1-scaled.png\" class=\"attachment-full size-full wp-image-4080\" alt=\"STELLA-1.2 modular instrument platform\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/02\/STELLA-1_2_snap2-1-scaled.png 2560w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/02\/STELLA-1_2_snap2-1-300x164.png 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/02\/STELLA-1_2_snap2-1-1024x559.png 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/02\/STELLA-1_2_snap2-1-768x419.png 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/02\/STELLA-1_2_snap2-1-1536x839.png 1536w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/02\/STELLA-1_2_snap2-1-2048x1118.png 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\r\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/stella-1-2-launch\/\" target=\"_self\"><\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\r\n\r\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\r\n\t\t\t<a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/stella-1-2-launch\/\" target=\"_self\">\r\n\t\t\t\tSTELLA-1.2 Official Launch: Earth Science Workforce Development\t\t\t<\/a>\r\n\t\t<\/h2>\r\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\r\n\t\t\t\r\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\r\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\r\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\r\n\t\t\t\t\t<span>February 24, 2026<\/span>\r\n\t\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t<\/div>\r\n\t\t\r\n\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\r\n\t\t<p class=\"premium-blog-post-content\">NASA scientists and engineers at Goddard Space Flight Center, led by Paul Mirel and Mike \u2026<\/p>\t\t<\/div>\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\r\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"3\">\r\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-side\">\r\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\r\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-bright-effect\">\r\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_rs_Elisa_Mai.png\" class=\"attachment-full size-full wp-image-3762\" alt=\"Elisa Mae with STELLA backdrop\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_rs_Elisa_Mai.png 1920w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_rs_Elisa_Mai-300x169.png 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_rs_Elisa_Mai-1024x576.png 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_rs_Elisa_Mai-768x432.png 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_rs_Elisa_Mai-1536x864.png 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/>\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\r\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/from-orbit-to-earth-agricultural-workforce-development-using-real-time-spectrometry\/\" target=\"_self\"><\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\r\n\r\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\r\n\t\t\t<a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/from-orbit-to-earth-agricultural-workforce-development-using-real-time-spectrometry\/\" target=\"_self\">\r\n\t\t\t\tFrom Orbit to Earth: Agricultural Workforce Development using Real-Time Spectrometry\t\t\t<\/a>\r\n\t\t<\/h2>\r\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\r\n\t\t\t\r\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\r\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\r\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\r\n\t\t\t\t\t<span>January 17, 2026<\/span>\r\n\t\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t<\/div>\r\n\t\t\r\n\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\r\n\t\t<p class=\"premium-blog-post-content\">At Garden City Community College in Kansas, Assistant Professor Elisa Mai integrated STELLA spectrometers into \u2026<\/p>\t\t<\/div>\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\r\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"3\">\r\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-side\">\r\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\r\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-bright-effect\">\r\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"700\" height=\"467\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/543345591_1611099696941137_91242559223956439_n.webp\" class=\"attachment-full size-full wp-image-3719\" alt=\"Garden City Community College (GCCC) students gather data in an irrigated Kansas corn field. Photo courtesy of GCCC.\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/543345591_1611099696941137_91242559223956439_n.webp 700w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/543345591_1611099696941137_91242559223956439_n-300x200.webp 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/>\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\r\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/garden-city-community-college-completes-pilot-course-with-nasa-acres\/\" target=\"_self\"><\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\r\n\r\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\r\n\t\t\t<a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/garden-city-community-college-completes-pilot-course-with-nasa-acres\/\" target=\"_self\">\r\n\t\t\t\tGarden City Community College Completes Pilot Course with NASA Acres\t\t\t<\/a>\r\n\t\t<\/h2>\r\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\r\n\t\t\t\r\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\r\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\r\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\r\n\t\t\t\t\t<span>December 15, 2025<\/span>\r\n\t\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t<\/div>\r\n\t\t\r\n\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\r\n\t\t<p class=\"premium-blog-post-content\">Garden City Community College (GCCC) in Garden City, Kansas has successfully concluded the first offering \u2026<\/p>\t\t<\/div>\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\r\n\t\t\t\t<\/div>\n\n\t\t\t\t<div class=\"premium-blog-footer\">\n\t\t\t\t\t\t<nav class=\"premium-blog-pagination-container\" role=\"navigation\" aria-label=\"Pagination\">\r\n\t\t\t\t<span aria-current=\"page\" class=\"page-numbers current\">1<\/span>\n<a class=\"page-numbers\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-json\/wp\/v2\/pages\/4289\/page\/2\/\">2<\/a>\n<a class=\"page-numbers\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-json\/wp\/v2\/pages\/4289\/page\/3\/\">3<\/a>\n<a class=\"next page-numbers\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-json\/wp\/v2\/pages\/4289\/page\/2\/\">Next \u00bb<\/a>\t\t\t<\/nav>\r\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e0f128d e-flex e-con-boxed e-con e-parent\" data-id=\"e0f128d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c90dcec elementor-widget__width-inherit elementor-hidden-mobile elementor-widget elementor-widget-premium-addon-image-button\" data-id=\"c90dcec\" data-element_type=\"widget\" data-widget_type=\"premium-addon-image-button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<a class=\"premium-image-button-none premium-image-button premium-btn-sm premium-image-button-none\" href=\"\/stella\/downloads\/\">\n\t\t\t<div class=\"premium-image-button-text-icon-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"premium-svg-nodraw premium-drawable-icon e-font-icon-svg e-fas-file-download\" aria-hidden=\"true\" viewBox=\"0 0 384 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224 136V0H24C10.7 0 0 10.7 0 24v464c0 13.3 10.7 24 24 24h336c13.3 0 24-10.7 24-24V160H248c-13.2 0-24-10.8-24-24zm76.45 211.36l-96.42 95.7c-6.65 6.61-17.39 6.61-24.04 0l-96.42-95.7C73.42 337.29 80.54 320 94.82 320H160v-80c0-8.84 7.16-16 16-16h32c8.84 0 16 7.16 16 16v80h65.18c14.28 0 21.4 17.29 11.27 27.36zM377 105L279.1 7c-4.5-4.5-10.6-7-17-7H256v128h128v-6.1c0-6.3-2.5-12.4-7-16.9z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<span >\n\t\t\t\t\t\tDownload STELLA-AA1 Module Files\t\t\t\t\t<\/span>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t<\/a>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-35210f1 elementor-widget__width-inherit elementor-hidden-desktop elementor-hidden-tablet elementor-widget elementor-widget-premium-addon-image-button\" data-id=\"35210f1\" data-element_type=\"widget\" data-widget_type=\"premium-addon-image-button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<a class=\"premium-image-button-none premium-image-button premium-btn-sm premium-image-button-none\" href=\"\/stella\/downloads\/\">\n\t\t\t<div class=\"premium-image-button-text-icon-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"premium-svg-nodraw premium-drawable-icon e-font-icon-svg e-fas-file-download\" aria-hidden=\"true\" viewBox=\"0 0 384 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224 136V0H24C10.7 0 0 10.7 0 24v464c0 13.3 10.7 24 24 24h336c13.3 0 24-10.7 24-24V160H248c-13.2 0-24-10.8-24-24zm76.45 211.36l-96.42 95.7c-6.65 6.61-17.39 6.61-24.04 0l-96.42-95.7C73.42 337.29 80.54 320 94.82 320H160v-80c0-8.84 7.16-16 16-16h32c8.84 0 16 7.16 16 16v80h65.18c14.28 0 21.4 17.29 11.27 27.36zM377 105L279.1 7c-4.5-4.5-10.6-7-17-7H256v128h128v-6.1c0-6.3-2.5-12.4-7-16.9z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<span >\n\t\t\t\t\t\tDownload STELLA-AA1 Module Files\t\t\t\t\t<\/span>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t<\/a>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f5935aa e-flex e-con-boxed e-con e-parent\" data-id=\"f5935aa\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-fbb66b4 e-con-full e-flex e-con e-child\" data-id=\"fbb66b4\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f92c6de elementor-widget elementor-widget-heading\" data-id=\"f92c6de\" data-element_type=\"widget\" id=\"build\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">STELLA-AA1 Module Build Steps<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d71681e e-con-full e-flex e-con e-child\" data-id=\"d71681e\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2ce423f e-con-full e-flex e-con e-child\" data-id=\"2ce423f\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f737e41 e-n-tabs-mobile elementor-widget elementor-widget-n-tabs\" data-id=\"f737e41\" data-element_type=\"widget\" data-settings=\"{&quot;tabs_justify_horizontal&quot;:&quot;center&quot;,&quot;horizontal_scroll&quot;:&quot;disable&quot;}\" data-widget_type=\"nested-tabs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-tabs\" data-widget-number=\"259227201\" aria-label=\"Tabs. Open items with Enter or Space, close with Escape and navigate using the Arrow keys.\">\n\t\t\t<div class=\"e-n-tabs-heading\" role=\"tablist\">\n\t\t\t\t\t<button id=\"e-n-tab-title-2592272011\" class=\"e-n-tab-title\" aria-selected=\"true\" data-tab-index=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"e-n-tab-content-2592272011\" style=\"--n-tabs-title-order: 1;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tStep 1. Parts Needed\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-2592272012\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-2592272012\" style=\"--n-tabs-title-order: 2;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tStep 2. Build Instructions\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t\t<\/div>\n\t\t\t<div class=\"e-n-tabs-content\">\n\t\t\t\t<div id=\"e-n-tab-content-2592272011\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-2592272011\" data-tab-index=\"1\" style=\"--n-tabs-title-order: 1;\" class=\"e-active elementor-element elementor-element-1021159 e-con-full e-flex e-con e-child\" data-id=\"1021159\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-be031e9 elementor-widget elementor-widget-heading\" data-id=\"be031e9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Commercial Off The Shelf (COTS) Parts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74965a1 elementor-widget elementor-widget-shortcode\" data-id=\"74965a1\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\n<table id=\"tablepress-19\" class=\"tablepress tablepress-id-19\">\n<thead>\n<tr class=\"row-1\">\n\t<th colspan=\"5\" class=\"column-1\">STELLA-1.2 Air Analyzer parts list<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"row-2\">\n\t<td class=\"column-1\"><strong>Line<\/strong><\/td><td class=\"column-2\"><strong>Description<\/strong><\/td><td class=\"column-3\"><strong>Quantity each<\/strong><\/td><td class=\"column-4\"><strong>Manufacturer\/ Vendor<\/strong><\/td><td class=\"column-5\"><strong>Manufacturer PN<\/strong><\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\"><strong>1<\/strong><\/td><td class=\"column-2\"><strong>PMSA003I air quality particulates sensor<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">Adafruit<\/td><td class=\"column-5\">4632<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\"><strong>2<\/strong><\/td><td class=\"column-2\"><strong>methane sensor<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">SparkFun<\/td><td class=\"column-5\">SEN--09404<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\"><strong>3<\/strong><\/td><td class=\"column-2\"><strong>methane sensor adapter board<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">SparkFun<\/td><td class=\"column-5\">BOB--08891<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\"><strong>4<\/strong><\/td><td class=\"column-2\"><strong>4.7k\u03a9 resistor<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">Digikey<\/td><td class=\"column-5\">RNMF14FTC4K70<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\"><strong>5<\/strong><\/td><td class=\"column-2\"><strong>100k\u03a9 resistor<\/strong><\/td><td class=\"column-3\">2<\/td><td class=\"column-4\">Digikey<\/td><td class=\"column-5\">13-CFR-12JR-52-1KCT-ND<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\"><strong>6<\/strong><\/td><td class=\"column-2\"><strong>Permaproto board, half size<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">Adafruit<\/td><td class=\"column-5\">1609<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\"><strong>7<\/strong><\/td><td class=\"column-2\"><strong>Qwiic cable 50mm<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">Adafruit<\/td><td class=\"column-5\">4210<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\"><strong>8<\/strong><\/td><td class=\"column-2\"><strong>MCP9808 precision air temperature sensor<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">Adafruit<\/td><td class=\"column-5\">5027<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\"><strong>9<\/strong><\/td><td class=\"column-2\"><strong>SCD-40 CO2 sensor<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">Adafruit<\/td><td class=\"column-5\">5187<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-386efec elementor-widget elementor-widget-heading\" data-id=\"386efec\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3D Parts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4df52a9 elementor-widget elementor-widget-image\" data-id=\"4df52a9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/AA_3D_prints-768x576.png\" class=\"attachment-medium_large size-medium_large wp-image-4325\" alt=\"Air Analyzer 1 module for STELLA-1.2 3D prints\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/AA_3D_prints-768x576.png 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/AA_3D_prints-300x225.png 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/AA_3D_prints-1024x768.png 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/AA_3D_prints-1536x1152.png 1536w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/AA_3D_prints-2048x1536.png 2048w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3abfbee elementor-widget elementor-widget-shortcode\" data-id=\"3abfbee\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\n<table id=\"tablepress-23\" class=\"tablepress tablepress-id-23\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Line<\/th><th class=\"column-2\">Description<\/th><th class=\"column-3\">Quantity<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"row-2\">\n\t<td class=\"column-1\">1<\/td><td class=\"column-2\">Main Housing<\/td><td class=\"column-3\">1<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">2<\/td><td class=\"column-2\">End Cap<\/td><td class=\"column-3\">1<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">3<\/td><td class=\"column-2\">Particulate Spacer<\/td><td class=\"column-3\">1<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">4<\/td><td class=\"column-2\">Sensor Clamp<\/td><td class=\"column-3\">1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-2592272012\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-2592272012\" data-tab-index=\"2\" style=\"--n-tabs-title-order: 2;\" class=\" elementor-element elementor-element-6f81235 e-con-full e-flex e-con e-child\" data-id=\"6f81235\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-59be809 elementor-widget__width-inherit elementor-widget elementor-widget-premium-addon-image-button\" data-id=\"59be809\" data-element_type=\"widget\" data-widget_type=\"premium-addon-image-button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<a class=\"premium-image-button-none premium-image-button premium-btn-sm premium-image-button-none\" href=\"https:\/\/youtu.be\/-Y-qpu_sNs4\" target=\"_blank\">\n\t\t\t<div class=\"premium-image-button-text-icon-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"premium-svg-nodraw premium-drawable-icon e-font-icon-svg e-fas-video\" aria-hidden=\"true\" viewBox=\"0 0 576 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M336.2 64H47.8C21.4 64 0 85.4 0 111.8v288.4C0 426.6 21.4 448 47.8 448h288.4c26.4 0 47.8-21.4 47.8-47.8V111.8c0-26.4-21.4-47.8-47.8-47.8zm189.4 37.7L416 177.3v157.4l109.6 75.5c21.2 14.6 50.4-.3 50.4-25.8V127.5c0-25.4-29.1-40.4-50.4-25.8z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<span >\n\t\t\t\t\t\tOpen STELLA-1.2 AA1 Module Build Video\t\t\t\t\t<\/span>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t<\/a>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-991950d elementor-widget elementor-widget-shortcode\" data-id=\"991950d\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\n<table id=\"tablepress-21\" class=\"tablepress tablepress-id-21\">\n<thead>\n<tr class=\"row-1\">\n\t<th colspan=\"9\" class=\"column-1\">STELLA-1.2 Air Analyzer 1 module build procedure \u2014 updated 3-21-2026<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"row-2\">\n\t<td class=\"column-1\"><strong>Line<\/strong><\/td><td class=\"column-2\"><strong>Description<\/strong><\/td><td class=\"column-3\"><strong>Function<\/strong><\/td><td class=\"column-4\"><strong>MC pin<\/strong><\/td><td class=\"column-5\"><strong>Front\/ Rear<\/strong><\/td><td class=\"column-6\"><strong>Location 1<\/strong><\/td><td class=\"column-7\"><strong>Location 2<\/strong><\/td><td class=\"column-8\"><strong>color\/ note<\/strong><\/td><td class=\"column-9\"><strong>Notes<\/strong><\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">1<\/td><td class=\"column-2\">3D print<\/td><td class=\"column-3\"> spacer<\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>-<\/strong><\/td><td class=\"column-6\"><strong>-<\/strong><\/td><td class=\"column-7\"><strong>-<\/strong><\/td><td class=\"column-8\">particulate sensor spacer<\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">2<\/td><td class=\"column-2\"><strong>cut traces<\/strong><\/td><td class=\"column-3\"><strong>bus traces<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Rear<\/strong><\/td><td class=\"column-6\"><strong><div style=\"text-align: right\">30 AB, BC, CD<\/div><\/strong><\/td><td class=\"column-7\"><strong><\/strong><\/td><td class=\"column-8\"><strong>cut traces with a sharp knife, remove segment<\/strong><\/td><td class=\"column-9\"><strong>test continuity<\/strong><\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">3<\/td><td class=\"column-2\"><strong>cut traces<\/strong><\/td><td class=\"column-3\"><strong>analog traces<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Rear<\/strong><\/td><td class=\"column-6\"><strong><div style=\"text-align: right\">30 Hi, iJ<\/div><\/strong><\/td><td class=\"column-7\"><strong><\/strong><\/td><td class=\"column-8\"><strong>cut traces with a sharp knife, remove segment<\/strong><\/td><td class=\"column-9\">test continuity<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">4<\/td><td class=\"column-2\"><strong>magnet coupler 4 pos<\/strong><\/td><td class=\"column-3\"><strong>4 pin, pin face<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>A30, B30,C30, D30<\/strong><\/td><td class=\"column-7\"><strong>[x]<\/strong><\/td><td class=\"column-8\"><strong>use alignment fixture<\/strong><\/td><td class=\"column-9\"><strong>don\u2019t solder before wire placement<\/strong><\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">5<\/td><td class=\"column-2\"><strong>magnet coupler 3 pos<\/strong><\/td><td class=\"column-3\"><strong>3 pin, pin face<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>H30, i30, J30<\/strong><\/td><td class=\"column-7\"><strong>[x]<\/strong><\/td><td class=\"column-8\"><strong>use alignment fixture<\/strong><\/td><td class=\"column-9\"><strong>don\u2019t solder before wire placement<\/strong><\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">6<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>GND<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>B30<\/strong><\/td><td class=\"column-7\"><strong>GND (-) below A30<\/strong><\/td><td class=\"column-8\"><div class=\"gnd\">GND<\/div><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">7<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>3V<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>A30<\/strong><\/td><td class=\"column-7\"><strong>3V (+) below A30<\/strong><\/td><td class=\"column-8\"><div class=\"v3\">+3.3V<\/div><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">8<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>I2C_SCL<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>C30<\/strong><\/td><td class=\"column-7\"><strong>SCL (-) above J30<\/strong><\/td><td class=\"column-8\"><div class=\"SCL\">i2c Serial<\/div><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">9<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>I2C_SDA<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>D30<\/strong><\/td><td class=\"column-7\"><strong>SDA (+) above J30<\/strong><\/td><td class=\"column-8\"><div class=\"SDA\">i2c Serial Data<\/div<><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\">10<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>5V power<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>J30<\/strong><\/td><td class=\"column-7\"><strong>J8, solder after particulate sensor put in<\/strong><\/td><td class=\"column-8\"><div class=\"orange\">5V<\/div><\/td><td class=\"column-9\"><strong>leave plenty of slack in wire to go over particulate sensor, don't solder until resistor put in<\/strong><\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\">11<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>5V power<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>H8<\/strong><\/td><td class=\"column-7\"><strong>H9<\/strong><\/td><td class=\"column-8\"><div class=\"orange\">5V<\/div><\/td><td class=\"column-9\"><strong><\/strong><\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\">12<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>Analog input 1<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>H30<\/strong><\/td><td class=\"column-7\"><strong>D12, solder after particulate sensor put in<\/strong><\/td><td class=\"column-8\"><div class=\"purple\">Analog input 1<\/div><\/td><td class=\"column-9\"><strong>leave plenty of slack in wire to go over particulate sensor<\/strong><\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\">13<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>GND<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>GND (-) below A8<\/strong><\/td><td class=\"column-7\"><strong>A8<\/strong><\/td><td class=\"column-8\"><div class=\"gnd\">GND<\/div><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\">14<\/td><td class=\"column-2\"><strong>install resistor<\/strong><\/td><td class=\"column-3\"><strong>4.7k\u03a9 resistor (not polarized)<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>GND (-) below A9<\/strong><\/td><td class=\"column-7\"><strong>C9<\/strong><\/td><td class=\"column-8\"><strong>yellow-violet-red-gold, enable pull-down<\/strong><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\">15<\/td><td class=\"column-2\"><strong>install resistor<\/strong><\/td><td class=\"column-3\"><strong>100k\u03a9 resistor (not polarized)<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>E9<\/strong><\/td><td class=\"column-7\"><strong>E12<\/strong><\/td><td class=\"column-8\"><strong>brown-black-yellow-gold, divider high<\/strong><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-18\">\n\t<td class=\"column-1\">16<\/td><td class=\"column-2\"><strong>install resistor<\/strong><\/td><td class=\"column-3\"><strong>100k\u03a9 resistor (not polarized)<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>C12<\/strong><\/td><td class=\"column-7\"><strong>GND (-) below A12<\/strong><\/td><td class=\"column-8\"><strong>brown-black-yellow-gold, divider high<\/strong><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-19\">\n\t<td class=\"column-1\">17<\/td><td class=\"column-2\"><strong>Header Pins<\/strong><\/td><td class=\"column-3\"><strong>Header Pins<\/strong><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>G3-G7<\/strong><\/td><td class=\"column-7\"><strong><\/strong><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-20\">\n\t<td class=\"column-1\">18<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>GND<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>H5<\/strong><\/td><td class=\"column-7\"><strong>GND (-) below A3<\/strong><\/td><td class=\"column-8\"><div class=\"gnd\">GND<\/div><\/td><td class=\"column-9\"><strong>Leave some slack to go around header pins towrds 1<\/strong><\/td>\n<\/tr>\n<tr class=\"row-21\">\n\t<td class=\"column-1\">19<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>3V<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>H7<\/strong><\/td><td class=\"column-7\"><strong>3V (+) below A2<\/strong><\/td><td class=\"column-8\"><div class=\"v3\">+3.3V<\/div><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-22\">\n\t<td class=\"column-1\">20<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>I2C_SCL<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>J4<\/strong><\/td><td class=\"column-7\"><strong>SCL (-) above J4<\/strong><\/td><td class=\"column-8\"><div class=\"SCL\">i2c Serial Clock<\/div><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-23\">\n\t<td class=\"column-1\">21<\/td><td class=\"column-2\"><strong>bus coupler wires<\/strong><\/td><td class=\"column-3\"><strong>I2C_SDA<\/strong><\/td><td class=\"column-4\"><strong><\/strong><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>J3<\/strong><\/td><td class=\"column-7\"><strong>SDA (+) above J3<\/strong><\/td><td class=\"column-8\"><div class=\"SDA\">i2c Serial Data<\/div><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-24\">\n\t<td class=\"column-1\">22<\/td><td class=\"column-2\"><strong>Adapter Board\/ Header Pins<\/strong><\/td><td class=\"column-3\"><strong>Header Pins<\/strong><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>GND<\/strong><\/td><td class=\"column-7\"><strong>B1<\/strong><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><strong>Solder Header pins to adapter board first, sticking out of sides with labels<\/strong><\/td>\n<\/tr>\n<tr class=\"row-25\">\n\t<td class=\"column-1\">23<\/td><td class=\"column-2\"><strong>Adapter Board\/ Header Pins<\/strong><\/td><td class=\"column-3\"><strong>Header Pins<\/strong><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>GND-B1<\/strong><\/td><td class=\"column-7\"><strong>H1-A1<\/strong><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-26\">\n\t<td class=\"column-1\">24<\/td><td class=\"column-2\"><strong>Methane Sensor <\/strong><\/td><td class=\"column-3\"><strong>Install Methane Sensor to Adapter creating methane breakout<\/strong><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>Rear<\/strong><\/td><td class=\"column-6\"><strong>[-]<\/strong><\/td><td class=\"column-7\"><strong>[-]<\/strong><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<tr class=\"row-27\">\n\t<td class=\"column-1\">25<\/td><td class=\"column-2\"><strong>Methane Breakout<\/strong><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>Rear<\/strong><\/td><td class=\"column-6\"><strong><div style=\"text-align: right\">D8,D9<\/div><\/strong><\/td><td class=\"column-7\"><strong><div style=\"text-align: right\">G8, G9<\/div><\/strong><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><strong>Adapter GND to D8, Adapter B1 to D9, Adapter H1 to G8, Adapter A1 to G9<\/strong><\/td>\n<\/tr>\n<tr class=\"row-28\">\n\t<td class=\"column-1\">26<\/td><td class=\"column-2\"><strong>install CO2 Breakout<\/strong><\/td><td class=\"column-3\"><strong> install CO2 breakout<\/strong><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>G3-G7<\/strong><\/td><td class=\"column-7\"><strong><\/strong><\/td><td class=\"column-8\"><\/td><td class=\"column-9\">after soldering connect a qwiic cable from 10 facing position  <\/td>\n<\/tr>\n<tr class=\"row-29\">\n\t<td class=\"column-1\">27<\/td><td class=\"column-2\"><strong>install Particulate sensor<\/strong><\/td><td class=\"column-3\"><strong>install Particulate sensor, use spacer<\/strong><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><strong>Front<\/strong><\/td><td class=\"column-6\"><strong>GND (-) below A13,A29<\/strong><\/td><td class=\"column-7\"><strong>GND (+) above J13, J29<\/strong><\/td><td class=\"column-8\"><\/td><td class=\"column-9\">connect qwiic connect from C02 breakout, install another qwiic connect cable, 1 wire approx 110mm to hold down pariculate sensor (over blue), 1 wire approx 70mm<\/td>\n<\/tr>\n<tr class=\"row-30\">\n\t<td class=\"column-1\">28<\/td><td class=\"column-2\"><strong>install Temperature sensor<\/strong><\/td><td class=\"column-3\"><strong>install Temperature sensor, qwiic connect from Particulate sensor<\/strong><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The STELLA-AA1 (Air Analyzer) module for the STELLA-1.2 has a particulate, air temp &#038; relative humidity, methane and CO2 sensor.<\/p>\n","protected":false},"author":2,"featured_media":4290,"parent":3837,"menu_order":10,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"class_list":["post-4289","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>STELLA-AA1 module - STELLA<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/instruments\/stella-1-2\/stella-aa1-module\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"STELLA-AA1 module - STELLA\" \/>\n<meta property=\"og:description\" content=\"The STELLA-AA1 (Air Analyzer) module for the 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